Patents by Inventor Po Wen Chung

Po Wen Chung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240417925
    Abstract: A color control method for four-color field jet dyeing is provided. The method includes: obtaining fabric parameters of a fabric to be dyed; obtaining a fabric sample color; ascertaining whether predetermined pre-color-development color parameters corresponding to the fabric parameters and the fabric sample color exist in a field jet dyeing database; if not, generating temporary pre-color-development color parameters based on the fabric parameters and the fabric sample color, taking the temporary pre-color-development color parameters as contrast sample parameters, and generating field jet dyeing parameters according to the contrast sample parameters to dye the fabric; and if yes, taking the predetermined pre-color-development color parameters in the field jet dyeing database as contrast sample parameters, and generating field jet dyeing parameters according to the contrast sample parameters to dye the fabric. A color control device and a color control system are further provided.
    Type: Application
    Filed: August 29, 2024
    Publication date: December 19, 2024
    Inventors: Po-Wen CHUNG, Long TIAN, Xin-Gang LIU
  • Publication number: 20240343054
    Abstract: A digital inkjet transfer printing apparatus used for performing transfer printing on fabrics by virtue of digital inkjet printing is provided. The digital inkjet transfer printing apparatus includes: a blanket inkjet printing assembly, where the blanket inkjet printing assembly includes a digital inkjet machine for ejecting ink to a surface of a blanket to form an ink pattern; and a counterpressure transfer printing assembly, where the counterpressure transfer printing assembly includes a press roller and a back-up roller, the press roller generates a pressure towards the back-up roller when a fabric enters a transfer printing area between the press roller and the back-up roller to press a surface to be printed of the fabric against a surface of the blanket with the ink pattern, so as to transfer the ink pattern on the blanket to the surface to be printed of the fabric.
    Type: Application
    Filed: June 21, 2024
    Publication date: October 17, 2024
    Inventor: Po-Wen CHUNG
  • Publication number: 20240261765
    Abstract: Disclosed are methods for conversion of ?-hydroxy carbonyl species and preparation of amino alcohol precursor using bifunctional catalysts derived from layer double hydroxides. By the bifunctional catalyst, the abundant basic sites on HTO allow retro-aldol condensation to outpace direct hydrogenation, thus achieving an exceptional selectivity towards a desired product produced through retro-aldol condensation and then hydrogenation. Accordingly, this method exhibits particular utility in the renewable production of N-acetylethanolamine from biomass-derived N-acetyl glucosamine (GlcNAc) without using homogeneous base as a co-catalyst.
    Type: Application
    Filed: February 1, 2024
    Publication date: August 8, 2024
    Inventors: PO-WEN CHUNG, YUAN-PENG DU
  • Publication number: 20240207814
    Abstract: Disclosed is a modified carbonaceous material, which includes hexagonal carbon networks in a layered stacking structure and acidic functional groups bonded to the hexagonal carbon networks and mainly existing at edges of the layered carbonaceous structure. Accordingly, the close proximity of acid moiety at the edges can resemble the center of hydrolysis enzymes, resulting in enhancement of hydrolytic efficiency. Additionally, the acid-functionalized carbonaceous material can also be applied in the capture and storage of carbon dioxide due to its unexpectedly higher capacity for CO2 molecular.
    Type: Application
    Filed: January 30, 2024
    Publication date: June 27, 2024
    Inventors: Jia-Hui WANG, Hao-Ju CHOU, Po-Wen CHUNG
  • Patent number: 11918975
    Abstract: Disclosed is a modified carbonaceous material, which includes hexagonal carbon networks in a layered stacking structure and acidic functional groups bonded to the hexagonal carbon networks and mainly existing at edges of the layered carbonaceous structure. Accordingly, the close proximity of acid moiety at the edges can resemble the center of hydrolysis enzymes, resulting in enhancement of hydrolytic efficiency. Additionally, the acid-functionalized carbonaceous material can also be applied in the capture and storage of carbon dioxide due to its unexpectedly higher capacity for CO2 molecular.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: March 5, 2024
    Assignee: ACADEMIA SINICA
    Inventors: Jia-Hui Wang, Hao-Ju Chou, Po-Wen Chung
  • Publication number: 20230022210
    Abstract: Metal oxides-silica composite materials are synthesized by a co-precipitation method to serve as modified catalysts for converting ethanol into four-carbon hydrocarbons. The method includes mixing a liquid-phase silicon source and a metal precursor at different ratios so as to change the acid-base composition of the composite materials and thereby increase selectivity with respect to the four-carbon products.
    Type: Application
    Filed: September 16, 2022
    Publication date: January 26, 2023
    Inventors: Po-Wen CHUNG, Meng-Xun WU
  • Patent number: 11511271
    Abstract: Metal oxides-silica composite materials are synthesized by a co-precipitation method to serve as modified catalysts for converting ethanol into four-carbon hydrocarbons. The method includes mixing a liquid-phase silicon source and a metal precursor at different ratios so as to change the acid-base composition of the composite materials and thereby increase selectivity with respect to the four-carbon products.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: November 29, 2022
    Assignee: ACADEMIA SINICA
    Inventors: Po-Wen Chung, Meng-Xun Wu
  • Publication number: 20220064201
    Abstract: Disclosed is a stabilized acyclic saccharide composite, which includes a LDH-based (layered double hydroxide-based) material and acyclic saccharides intercalated in interlayer regions of the LDH-based material. The acyclic saccharides stabilized and trapped in the LDH-based material give an opportunity for direct functionalization to other valuable molecules in the pharmaceutical, chemical or carbohydrate industries. Further, a novel pathway for saccharide transformation and aldol condensation without the drawbacks associated with enzymatic catalysts is achieved through the acyclic saccharides trapped by the LDH-based material.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Po-Wen CHUNG, Chia-Hui WU, Yi-Shiuan TSAI, Chun-An HSIEH
  • Patent number: 11235566
    Abstract: A rotary screen transfer printing machine and a control system thereof. The rotary screen transfer printing machine having a feeding unit, a printing unit, a drying unit, and a receiving unit; the printing unit has at least one rotary screen transfer printing assembly and a guide belt assembly; each rotary screen transfer printing assembly has a rotary screen plate roller and a transfer roller; the rotary screen plate roller is close to the transfer roller; the transfer roller is seamlessly coated with rubber or a resin having good affinity for a water-based ink. A control system includes: a motion controller; a conveying synchronization module, used for controlling the feeding unit, the printing unit, the drying unit, and the receiving unit to synchronize the conveying speeds of the four units; and a rotary screen transfer printing synchronization module.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: February 1, 2022
    Assignee: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTD
    Inventor: Po-Wen Chung
  • Patent number: 10941130
    Abstract: This invention relates to a novel molten salt system in chemical transformation of saccharides and a method as well as an apparatus for multi carbon production by the molten salt system. It is found that an eutectic molten salt composition is advantageous for multi-carbon productions through chemical transformation under mild conditions. This invention further provides a method and an apparatus for preparing 5-hydroxymethylfurfural (HMF) and HMF-derived chemicals from saccharides by the said molten salt system.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: March 9, 2021
    Assignee: Academia Sinica
    Inventors: Po-Wen Chung, Prasenjit Bhaumik, Hao-Ju Chou
  • Patent number: 10926531
    Abstract: A vertical double-sided rotary screen transfer printing apparatus includes a vertical rack and one or more pair of rotary screen transfer printing assemblies horizontally disposed opposite to each other. Each rotary screen transfer printing assembly includes a rotary screen plate roller and a transfer roller arranged parallel to each other. The rotary screen plate roller transfers a pattern onto the transfer roller serving as a temporary transfer carrier. The transfer roller transfers the pattern onto a fabric passing in a vertical direction between the rotary screen transfer printing assemblies opposite to each other.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: February 23, 2021
    Assignee: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTD
    Inventor: Po-Wen Chung
  • Patent number: 10906292
    Abstract: A horizontal rotary screen transfer printing device includes a frame, two or more sets of rotary screen transfer printing assemblies which are horizontally disposed on the frame, and a back-pressure roller. Each rotary screen transfer printing assembly includes a rotary screen plate roller and a transfer roller arranged parallel to each other. The rotary screen plate roller transfers a pattern onto the transfer roller serving as a temporary transfer carrier. The transfer roller transfers the pattern onto a fabric passing between the back-pressure roller and the transfer roller in a horizontal direction.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: February 2, 2021
    Assignees: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTD, CHUNG, PO-WEN
    Inventor: Po-Wen Chung
  • Publication number: 20200398248
    Abstract: Disclosed is a modified carbonaceous material, which includes hexagonal carbon networks in a layered stacking structure and acidic functional groups bonded to the hexagonal carbon networks and mainly existing at edges of the layered carbonaceous structure. Accordingly, the close proximity of acid moiety at the edges can resemble the center of hydrolysis enzymes, resulting in enhancement of hydrolytic efficiency. Additionally, the acid-functionalized carbonaceous material can also be applied in the capture and storage of carbon dioxide due to its unexpectedly higher capacity for CO2 molecular.
    Type: Application
    Filed: June 18, 2019
    Publication date: December 24, 2020
    Inventors: Jia-Hui WANG, Hao-Ju CHOU, Po-Wen CHUNG
  • Patent number: 10865518
    Abstract: A paperless transfer printing method includes the following steps: (a) printing, by a printing machine, aqueous ink onto a transfer printing temporary carrier in a set pattern, wherein a surface of the transfer printing temporary carrier is made of an elastic polymer material and a surface tension of the aqueous ink is less than the critical surface tension of the transfer printing temporary carrier; (b) drying the to-be-transferred pattern on the transfer printing temporary carrier; (c) wetting the transfer printing temporary carrier by using an aqueous surface tension increasing liquid; and (d) separating the aqueous solution or the aqueous dispersion liquid from the transfer printing temporary carrier at a tight-contact position between the transfer printing temporary carrier and the fabric, so that an aqueous ink dye is transferred onto the fiber of the fabric.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: December 15, 2020
    Assignees: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTD.
    Inventor: Po-Wen Chung
  • Publication number: 20200346201
    Abstract: Metal oxides-silica composite materials are synthesized by a co-precipitation method to serve as modified catalysts for converting ethanol into four-carbon hydrocarbons. The method includes mixing a liquid-phase silicon source and a metal precursor at different ratios so as to change the acid-base composition of the composite materials and thereby increase selectivity with respect to the four-carbon products.
    Type: Application
    Filed: June 27, 2019
    Publication date: November 5, 2020
    Inventors: Po-Wen CHUNG, Meng-Xun WU
  • Publication number: 20200299249
    Abstract: This invention relates to a novel molten salt system in chemical transformation of saccharides and a method as well as an apparatus for multi carbon production by the molten salt system. It is found that an eutectic molten salt composition is advantageous for multi-carbon productions through chemical transformation under mild conditions. This invention further provides a method and an apparatus for preparing 5-hydroxymethylfurfural (HMF) and HMF-derived chemicals from saccharides by the said molten salt system.
    Type: Application
    Filed: March 22, 2019
    Publication date: September 24, 2020
    Applicant: ACADEMIA SINICA
    Inventors: Po-Wen CHUNG, Prasenjit BHAUMIK, Hao-Ju CHOU
  • Publication number: 20200180301
    Abstract: A rotary screen transfer printing machine and a control system thereof. The rotary screen transfer printing machine having a feeding unit, a printing unit, a drying unit, and a receiving unit; the printing unit has at least one rotary screen transfer printing assembly and a guide belt assembly; each rotary screen transfer printing assembly has a rotary screen plate roller and a transfer roller; the rotary screen plate roller is close to the transfer roller; the transfer roller is seamlessly coated with rubber or a resin having good affinity for a water-based ink. A control system includes: a motion controller; a conveying synchronization module, used for controlling the feeding unit, the printing unit, the drying unit, and the receiving unit to synchronize the conveying speeds of the four units; and a rotary screen transfer printing synchronization module.
    Type: Application
    Filed: May 21, 2018
    Publication date: June 11, 2020
    Inventor: Po-Wen Chung
  • Publication number: 20200164630
    Abstract: A horizontal rotary screen transfer printing device comprises: a frame, at least two sets of rotary screen transfer printing assemblies which are horizontally disposed on the frame, and a back-pressure roller. Each rotary screen transfer printing assembly comprises a rotary screen plate roller and a transfer roller arranged parallel to each other; the rotary screen plate roller transfers a pattern onto the transfer roller serving as a temporary transfer carrier; the transfer roller transfers the pattern onto a fabric passing between the back-pressure roller and the transfer roller in a horizontal direction.
    Type: Application
    Filed: June 6, 2018
    Publication date: May 28, 2020
    Inventor: Po-Wen Chung
  • Patent number: 10618272
    Abstract: A transfer dyeing method, includes: 1) coating a pretreating liquid on a front side of a fabric by a first pretreating anilox roller; 2) printing a dyeing ink on a first ink transfer roller or ink transfer ribbon by a first full-master printing plate roller; 3) transferring the dyeing ink to the front of the fabric; 4) drying the fabric and then making a back side of the fabric face to a second pretreating anilox roller; 5) coating the pretreating liquid on the back side of the fabric; 6) printing a dyeing ink that is same as or different from the dyeing ink of step 2) on a second transfer-roller or ink transfer ribbon; 7) transferring the dyeing ink to the back side of the fabric; and 8) drying the fabric, followed by color fixing, water washing and shaping.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: April 14, 2020
    Assignees: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTD
    Inventor: Po-Wen Chung
  • Publication number: 20200086627
    Abstract: A vertical duplex rotary screen transfer printing device, comprising a vertical frame and at least one pair of rotary screen transfer printing assemblies horizontally opposite to each other. Each rotary screen transfer printing assembly comprises a rotary screen plate roller and a transfer roller arranged parallel to each other; the rotary screen plate roller transfers a pattern onto the transfer roller serving as a temporary transfer carrier; the transfer roller transfers the pattern onto a fabric passing in a vertical direction between the rotary screen transfer printing assemblies opposite to each other.
    Type: Application
    Filed: May 28, 2018
    Publication date: March 19, 2020
    Inventor: Po-Wen Chung